Can't open Microsoft office

Hello,


i just install the business in box app to see an example of a document. but then there's something wrong with the Microsoft office. i found it that all the microsoft office were related with the app. then, i uninstall it. i thought it will be back to normal. but i cant even open all the microsoft office word, excel etc. even the document that i save in the pen drive also i cant open it. please help me out. thanks in advance.